MIS 0855 Chapter Notes - Chapter 12.1: Sentiment Analysis

33 views1 pages

23 May 2018

School

Department

Course

Professor

For unlimited access to Textbook Notes, a Class+ subscription is required.

Don’t Worry, Faeook Still Has No Clue How You Feel Wohlsen

• Experiment conducted by Facebook on 700k people without them knowing

• Sentiment analysis – algorithms that analyze text in an effort to tease out the emotions behind

the words

• FB’s aility to understand and influence on your feelings in limited

• FB tweaked their News Feeds then tracked the reactions

o Positive expressions reduced → people posted more negative posts

o Negative expressions reduced → people posted more positive posts

• Issue with tracking positive or negative posts is its inability to detect sarcasm or words that can

be used in a positive sense in specific contexts

• Sentiment analysis techniques are only 70-80% accurate

• Result in FB study was that people produced an average of one fewer emotional word, per

thousand words, over the following week

• The etter FB a trai oputers to ko you, the ore effetie targetig it a proise

adertisers

find more resources at oneclass.com

Unlock document

This preview shows half of the first page of the document.
Unlock all 1 pages and 3 million more documents.

Already have an account? Log in

Get access